Correlation

Question 1

The regression equation is ŷ = 71.9 + 46.4x. Which statements are a correct interpretation of the slope and y-intercept? Select all that apply.

Revolt · Accepted Answer

For each increase in speed of 1 mph, an additional 46.4 calories are predicted to be burned.; About 71.9 calories are burned at rest.

Question 2

Answer each question using the scatterplot and regression equation.

Revolt · Accepted Answer

$18.09

Question 3

Answer each question using the scatterplot and regression equation.

Revolt · Accepted Answer

$43.12

Question 4

Answer each question using the scatterplot and regression equation.

Revolt · Accepted Answer

$145.63

Question 5

Which prediction statement is correct?

Revolt · Accepted Answer

The model predicts a heart rate of about 57.1 BPM for 5.5 hours of exercise per week.

Question 6

Answer each question using the scatterplot and regression equation.

Revolt · Accepted Answer

$67.24

Question 7

The explanatory variable for this association is.

Revolt · Accepted Answer

time

Question 8

What are the slope and y-intercept of the regression line?

Revolt · Accepted Answer

slope: –5.6, y-intercept: 77

Question 9

The response variable for this association is .

Revolt · Accepted Answer

water level

Correlation Answers